Why don't you allow an invoication to be one word only?

Why don't you allow an invoication to be one word only?

Hello,

I am trying to create my first action. I want to use it with a chat session.
Many of our incoming chats start with a "Hi" or "Hello".
Why can't I use it as an invocation?

Thanks!

    Zoho Pagesense Resources

        Zoho SalesIQ Resources



              Zoho TeamInbox Resources

                Zoho DataPrep Resources


                    Zoho CRM Plus Resources

                      Zoho Books Resources


                        Zoho Subscriptions Resources

                          Zoho Desk Resources

                            Zoho Projects Resources


                              Zoho Sprints Resources


                                Qntrl Resources


                                  Zoho Creator Resources


                                    Zoho WorkDrive Resources




                                        Zoho Campaigns Resources

                                          Zoho CRM Resources

                                                      Design. Discuss. Deliver.

                                                      Create visually engaging stories with Zoho Show.

                                                      Get Started Now